Interaction of Pb and Cd during anodic stripping voltammetric analysis at boron-doped diamond electrodes
摘要:
Highly boron-doped diamond (BDD) films were utilized for simultaneous electrochemical measurement of micromolar-level concentrations of Pb and Cd, and for the examination of their interactions. Differential pulse anodic stripping voltammetry (DPASV) was used for this detection. This approach can help to understand the possible detection of trace metals at BDD electrodes without the aid of mercury. These metals were found to strip at their characteristic potentials, in solutions containing Cd or Pb alone, and in those containing these metals together. The mixed solutions (concentration range: 1-5 muM) yielded well-separated stripping peaks for Pb and Cd and the differential stripping peak currents for the respective metals increased linearly with increasing metal concentration. There were mutual interferences due to Pb-Cd interactions, but these can be taken into account with the aid of three-dimensional calibration plots. A model has been developed to help explain the Pb-Cd interactions. (C) 2004 Elsevier Ltd. All rights reserved.
Syntheses, Structures, and Luminescent Properties of Two Isostructural 3D Cd<sup>II</sup>
Frameworks based on Rigid-flexible Hybrid Ligands
作者:Bing Zhao、Jia-Hui Bu、Ran Zhang、Mei-Ling Shao、Dong-Qing Wu、Zhong-Yi Li
DOI:10.1002/zaac.202000100
日期:2020.5.14
Two isostructural CdII frameworks, [Cd2(MMA)2(bpy)(H2O)2]n (1) and [Cd2(MMA)2(bpe)(H2O)2]n (2), were synthesized solvothermally with hybrid flexible methylmalonic acid (H2MMA) and rigid 4,4'‐bipyridine (bpy) or trans‐1,2‐bis(4‐pyridyl)ethylene (bpe) as coligands. Single‐crystal X‐ray diffraction analyses reveal that complexes 1 and 2 display a three‐dimensional (3D) framework structure composed of
Efficient photocatalytic selective nitro-reduction and C–H bond oxidation over ultrathin sheet mediated CdS flowers
作者:Sandip Kumar Pahari、Provas Pal、Divesh N. Srivastava、Subhash Ch. Ghosh、Asit Baran Panda
DOI:10.1039/c5cc01685a
日期:——
Visible light driven selective nitro reduction and oxidation of saturated sp3 C–H bonds using ultrathin (0.8 nm) sheet mediated uniform CdS flowers as catalyst under a household 40 W CFL lamp using molecular oxygen as oxidant is reported.
design a one-dimensional OIHPs phase change material. [FMPD][Cd(SCN)3] (FMPD = 1-fluoroethyl-1-methylpiperidinium) undergoes two reversible phasetransitions above room temperature with the substitution of methyl with fluoroethyl increasing the energy barrier of molecular motion. The individual crystal diffraction structures show that, unlike the phase change caused by the reorientation of organic
Synthesis, crystal structure, theoretical study and application of 1-(4-methylphenyl)-3-(2- (trifluoromethyl)phenyl)triaz-1-ene 1-oxide in the extraction of Ni ions
作者:Behrooz Rezaei、Mehrnoosh Fazlollahi
DOI:10.1007/s13738-020-02132-5
日期:2021.7
The crystal structure of 1-(4-methylphenyl)-3-(2-(trifluoromethyl)phenyl)triaz-1-ene 1-oxide (L) is monoclinic and has a space group of P21/c with a = 8.066(2) Å, b = 16.740(5) Å, c = 11.730(4) Å, β = 117.76(3)° and Z = 4. In this study, direct procedures were used to solve the crystalline structure of this complex and refine it by full-matrix least-squares to ultimate values of R1 = 0.0610 and wR2 = 0
A multinuclear (1H, 13C, 113Cd) nuclear magnetic resonance and magnetic circular dichroism spectroscopic study of thiolate complexes of cadmium
作者:Geetha K. Carson、Philip A.W. Dean、Martin J. Stillman
DOI:10.1016/s0020-1693(00)88548-5
日期:1981.1
chemical shifts are given for the complexes formed by 31 different thiolates individually in water at ambient probe temperature, and slow-exchange 1H and/or 13C and/or 113Cd NMR spectra are reported for several typical complexes at reduced temperature in CD3OD. In aqueous solution at ambient probe temperature, ligands with vicinal thiolate groups and −SCH2CHRS− (R = H, Me, Et, CH2OH, CH2SO−3 or CH2S−)) form